A kinetic alfvén wave and the proton distribution function in the fast solar wind

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A kinetic alfvén wave and the proton distribution function in the fast solar wind. / Li, Xing; Lu, Quanming; Chen, Yao; Li, Bo; Xia, Lidong.

In: Astrophysical Journal, Vol. 719, 20.08.2010, p. L190-L193.

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Li, X, Lu, Q, Chen, Y, Li, B & Xia, L 2010, 'A kinetic alfvén wave and the proton distribution function in the fast solar wind' Astrophysical Journal, vol. 719, pp. L190-L193. https://doi.org/10.1088/2041-8205/719/2/L190

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Li, Xing ; Lu, Quanming ; Chen, Yao ; Li, Bo ; Xia, Lidong. / A kinetic alfvén wave and the proton distribution function in the fast solar wind. In: Astrophysical Journal. 2010 ; Vol. 719. pp. L190-L193.

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@article{84b1d89325ac4f3097467e11c97658ab,
title = "A kinetic alfv{\'e}n wave and the proton distribution function in the fast solar wind",
abstract = "Using one-dimensional test particle simulations, the effect of a kinetic Alfv{\'e}n wave on the velocity distribution function (VDF) of protons in the collisionless solar wind is investigated. We first use linear Vlasov theory to numerically obtain the property of a kinetic Alfv{\'e}n wave (the wave propagates in the direction almost perpendicular to the background magnetic field). We then numerically simulate how the wave will shape the proton VDF. It is found that Landau resonance may be able to generate two components in the initially Maxwellian proton VDF: a tenuous beam component along the direction of the background magnetic field and a core component. The streaming speed of the beam relative to the core proton component is about 1.2?1.3 Alfv{\'e}n speed.",
keywords = "solar wind, waves",
author = "Xing Li and Quanming Lu and Yao Chen and Bo Li and Lidong Xia",
year = "2010",
month = "8",
day = "20",
doi = "10.1088/2041-8205/719/2/L190",
language = "English",
volume = "719",
pages = "L190--L193",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing",

}

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TY - JOUR

T1 - A kinetic alfvén wave and the proton distribution function in the fast solar wind

AU - Li, Xing

AU - Lu, Quanming

AU - Chen, Yao

AU - Li, Bo

AU - Xia, Lidong

PY - 2010/8/20

Y1 - 2010/8/20

N2 - Using one-dimensional test particle simulations, the effect of a kinetic Alfvén wave on the velocity distribution function (VDF) of protons in the collisionless solar wind is investigated. We first use linear Vlasov theory to numerically obtain the property of a kinetic Alfvén wave (the wave propagates in the direction almost perpendicular to the background magnetic field). We then numerically simulate how the wave will shape the proton VDF. It is found that Landau resonance may be able to generate two components in the initially Maxwellian proton VDF: a tenuous beam component along the direction of the background magnetic field and a core component. The streaming speed of the beam relative to the core proton component is about 1.2?1.3 Alfvén speed.

AB - Using one-dimensional test particle simulations, the effect of a kinetic Alfvén wave on the velocity distribution function (VDF) of protons in the collisionless solar wind is investigated. We first use linear Vlasov theory to numerically obtain the property of a kinetic Alfvén wave (the wave propagates in the direction almost perpendicular to the background magnetic field). We then numerically simulate how the wave will shape the proton VDF. It is found that Landau resonance may be able to generate two components in the initially Maxwellian proton VDF: a tenuous beam component along the direction of the background magnetic field and a core component. The streaming speed of the beam relative to the core proton component is about 1.2?1.3 Alfvén speed.

KW - solar wind

KW - waves

UR - http://hdl.handle.net/2160/8545

U2 - 10.1088/2041-8205/719/2/L190

DO - 10.1088/2041-8205/719/2/L190

M3 - Article

VL - 719

SP - L190-L193

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

ER -

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